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The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics. Additionally, the subsequent columns contains an informal explanation, a short example, the Unicode location, the name for use in HTML documents, [1] and the LaTeX symbol.
Also called humanocentrism. The practice, conscious or otherwise, of regarding the existence and concerns of human beings as the central fact of the universe. This is similar, but not identical, to the practice of relating all that happens in the universe to the human experience. To clarify, the first position concludes that the fact of human existence is the point of universal existence; the ...
Symbols allow people to go beyond what is known or seen by creating linkages between otherwise different concepts and experiences. All communication is achieved through the use of symbols: for example, a red octagon is a common symbol for "STOP"; on maps, blue lines often represent rivers; and a red rose often symbolizes love and compassion.
For symbols that are used only in mathematical logic, or are rarely used, see List of logic symbols. ¬ Denotes logical negation, and is read as "not". If E is a logical predicate, is the predicate that evaluates to true if and only if E evaluates to false. For clarity, it is often replaced by the word "not".
The relation between words, phrases, or symbols and the objects, concepts, or events they denote or stand for. [256] referential opacity A property of expressions wherein substituting a co-referential term does not necessarily preserve truth, typically occurring in intensional contexts like belief reports. reflexivity
Reality may be viewed as the sum or aggregate of all objects in existence within the universe, as opposed to that which is only imaginary, nonexistent or nonactual. The term is also used to refer to the ontological status of things, indicating their existence. [1] In physical terms, reality is the totality of a system, known and unknown. [2]
Engineering drawing symbols; Energy Systems Language; Hazard symbols; List of mathematical constants (typically letters and compound symbols) Glossary of mathematical symbols; List of physical constants (typically letters and compound symbols) List of common physics notations (typically letters used as variable names in equations)
The terms esoteric and arcane can also be used to describe the occult, [4] [5] in addition to their meanings unrelated to the supernatural. The term occult sciences was used in the 16th century to refer to astrology , alchemy , and natural magic , which today are considered pseudosciences .